Planetary Radio: Space Exploration, Astronomy and Science

2014: The Year We Landed on a Comet

Planetary Radio: Space Exploration, Astronomy and Science

Not just landed. Orbited, too. European Space Agency Senior Science Advisor Mark McCaughrean helps us celebrate the Rosetta orbiter and the Philae lander.Learn more about your ad choices. Visit megaphone.fm/adchoices See omnystudio.com/listener for privacy information. See omnystudio.com/listener for privacy information.

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